Effect of elevated temperature to radiation shielding of ultra-high performance concrete with silica sand or magnetite

• Main Authors: Muhammad Rashid, Raizal Saifulnaz, S., Mohammed Salem, N. M., Azreen, Y. L., Voo, M., Haniza, A. A., Shukri, Yahya, Mohd Syukri
• Format: Article
• Language: English
• Published: Elsevier 2020
• Online Access: http://psasir.upm.edu.my/id/eprint/88592/1/ABSTRACT.pdf; http://psasir.upm.edu.my/id/eprint/88592/; https://www.sciencedirect.com/science/article/abs/pii/S0950061820325721
• Institution: Universiti Putra Malaysia

The high density and strength of ultra-high performance concrete (UHPC) makes it suitable for radiation shielding, however, the deterioration of radiation shielding properties due to exposure to elevated temperature is a major concern. Hence this paper presents a study on the radiation shielding properties of UHPC after exposure to elevated temperature. It was found that the half-value layer and tenth value layer of both types of UHPC tested had increased by 76–82%, which was attributed to the excessive spalling and cracking that occurred. Magnetite was found to be slightly better than silica sand for radiation shielding.